annotate src/share/vm/ci/ciArray.hpp @ 1941:79d04223b8a5

Added caching for resolved types and resolved fields. This is crucial, because the local load elimination will lead to wrong results, if field equality (of two RiField objects with the same object and the same RiType) is not given. The caching makes sure that the default equals implementation is sufficient.
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Tue, 28 Dec 2010 18:33:26 +0100
parents c18cbe5936b8
children f95d63e2154a
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1 /*
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2 * Copyright (c) 1999, 2001, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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25 // ciArray
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26 //
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27 // This class represents an arrayOop in the HotSpot virtual
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28 // machine.
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29 class ciArray : public ciObject {
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30 private:
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31 int _length;
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32
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33 protected:
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34 ciArray( arrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {}
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35 ciArray( objArrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {}
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36 ciArray(typeArrayHandle h_a) : ciObject(h_a), _length(h_a()->length()) {}
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38 ciArray(ciKlass* klass, int len) : ciObject(klass), _length(len) {}
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39
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40 arrayOop get_arrayOop() { return (arrayOop)get_oop(); }
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41
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42 const char* type_string() { return "ciArray"; }
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44 void print_impl(outputStream* st);
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46 public:
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47 int length() { return _length; }
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48
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49 // What kind of ciObject is this?
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50 bool is_array() { return true; }
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51 bool is_java_object() { return true; }
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52 };